What are the common methods for hot repair of kilns?

1. Hot repair of glass kiln: Hot repair of pool wall bricks: After the pool wall is built with cast 41 # AZS bricks, it can meet the service life requirements of the smelting furnace, with a small amount of hot repair work. Currently, there are two possible methods for hot repair of pool wall bricks: 1. Cooling water pipe method. Select a seamless steel pipe with a diameter of 2050mm and immerse it 5080mm below the liquid level in the kiln along the eroded other wall to solidify the nearby molten glass, maintaining the outlet water temperature at about 50 °. Although this method works well, it increases heat and water consumption, and can only be used on the upper part of the pool wall. However, it is difficult to achieve results when the entire brick is mostly etched and thinned. 2. Outer iron brick method. When the pool wall brick is eroded to only 30 mm thick, 150 mm thick homogeneous bricks can be applied. Old bricks can be used for exterior wall tiles, and they must be preheated to around 80. The contact surface between bricks should be as flat as possible, and the brick joints should be small.
2. Hot repair of regenerator lattice bricks: Due to the selection of magnesium chrome bricks, magnesium bricks, and high purity zirconium corundum bricks with high alkali resistance, the regenerator lattice bricks can be used for one kiln period. At present, the main problem of heat storage chambers is grid blockage after powder melting. The main content of heat repair of heat storage chambers is to keep the grid smooth. The main methods for eliminating powder nodule in the regenerator include mechanical removal, flame melting removal, and so on.
3. Hot repair of glass kiln: Hot repair of nozzle brick: Nozzle brick is a special-shaped brick used in oil fired smelting furnace, which is a channel where atomized heavy oil is injected by a spray gun and mixed with combustion supporting air in the furnace. Because the nozzle brick is located at the flame opening, direct contact with the flame can easily burn out. When the nozzle mouth of the nozzle brick is burned into gaps, it should be replaced. The replacement method is very simple. First, remove the spray gun, open the small gap above the nozzle brick, remove the old nozzle brick, replace the new nozzle brick according to the usage of the brick material, place the gap properly, restore its action, and the thermal repair is completed.
The traditional hot repair method for glass kilns has a harsh environment and high labor intensity, resulting in a significant reduction in the use of refractory materials. However, it is still a difficult and arduous work that interferes with normal production. Currently, thermal repair and thermal oxygen spraying repair can improve the conditions of thermal repair, making personnel and equipment safer, and are being promoted and adopted. Hot repair of glass kilns is a method of repairing refractory materials by spraying refractory powder in the same phase as the refractory material to be repaired and welding at high temperatures. The oxygen method can quickly and safely repair refractory materials, which is very effective not only for ordinary damaged and worn refractory materials, but also for displaced or occasionally broken refractory materials, and even for parts that cannot be repaired by traditional hot repair methods, such as caulking or plugging holes, This method helps to improve the working efficiency of the smelting furnace.